Table Of Contents

Standard ACL Configuration Mode Commands

To create and modify standard access lists on a WAAS device for controlling access to interfaces or applications, use the ip access-list standard global configuration command. To disable a standard access list, use the no form of the command.

ip access-list standard {acl-name|acl-num}

Syntax Description

standard

Enables standard ACL configuration mode. The CLI enters the standard ACL configuration mode in which all subsequent commands apply to the current standard access list. The (config-std-nacl) prompt appears:

WAE(config-std-nacl)#

acl-name

Access list to which all commands entered from ACL configuration mode apply, using an alphanumeric string of up to 30 characters, beginning with a letter.

acl-num

Access list to which all commands entered from access list configuration mode apply, using a numeric identifier. For standard access lists, the valid range is 1 to 99.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

Global configuration

Device Modes

application-accelerator

central-manager

Usage Guidelines

Use access lists to control access to specific applications or interfaces on a WAAS device. An access control list consists of one or more condition entries that specify the kind of packets that the WAAS device will drop or accept for further processing. The WAAS device applies each entry in the order in which it occurs in the access list, which by default is the order in which you configured the entry.

Note IP ACLs that are defined on a router take precedence over the IP ACLs that are defined on the WAE. IP ACLs that are defined on a WAE take precedence over the WAAS application definition policies that are defined on the WAE.

Within ACL configuration mode, you can use the editing commands (list, delete, and move) to display the current condition entries, to delete a specific entry, or to change the order in which the entries will be evaluated. To return to global configuration mode, enter exit at the ACL configuration mode prompt.

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. Therefore, you must include at least one permit entry to create a valid access list.

After creating an access list, you can include the access list in an access group using the access-group command, which determines how the access list is applied. You can also apply the access list to a specific application using the appropriate command. A reference to an access list that does not exist is the equivalent of a permit any condition statement.

To create a standard access list, enter the ip access-list standard global configuration command. Identify the new or existing access list with a name up to 30 characters long beginning with a letter, or with a number. If you use a number to identify a standard access list, it must be between 1 and 99.

Note You must use a standard access list for providing access to the SNMP server or to the TFTP gateway/server. However, you can use either a standard access list or an extended access list for providing access to the WCCP application.

You typically use a standard access list to allow connections from a host with a specific IP address or from hosts on a specific network. To allow connections from a specific host, use the permit hostsource-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit hostsource-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. Therefore, the permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

After you identify the standard access list, the CLI enters the standard ACL configuration mode and all subsequent commands apply to the specified access list.

WAE(config)# ip access-list standard teststdacl

WAE(config-std-nacl)# exit

Examples

The following example creates a standard access list on the WAAS device that permits any packets from source IP address 192.168.1.0 for further processing:

WAE(config)# ip access-list standard teststdacl

WAE(config-std-nacl)# permit 192.168.1.0 any

WAE(config-std-nacl)# exit

The following commands activate the access list for an interface:

WAE(config)# interface gigabitethernet 1/0

WAE(config-if)# ip access-group teststdacl in

WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command:

Related Commands

(config-std-nacl) deny

To add a line to a standard access-list that specifies the type of packets that you want the WAAS device to drop, use the deny command.

[insert line-num] deny {source-ip[wildcard] | host source-ip | any}

To negate a standard IP ACL, use the following syntax.

nodeny {source-ip[wildcard]| host source-ip|any}

Syntax Description

insert

(Optional) Inserts the conditions following the specified line number into the access list.

line-num

Entry at a specific line number in the access list.

deny

Causes packets that match the specified conditions to be dropped.

source-ip

Source IP address. The number of the network or host from which the packet is being sent, specified as a 32-bit quantity in 4-part dotted-decimal format (for example, 0.0.0.0).

wildcard

(Optional) Portions of the preceding IP address to match, expressed using 4-digit, dotted-decimal notation. Bits to match are identified by a digital value of 0; bits to ignore are identified by a 1.

Note For standard IP ACLs, the wildcard parameter of the ip access-list command is always optional. If the host keyword is specified for a standard IP ACL, then the wildcard parameter is not allowed.

host

Matches the following IP address.

any

Matches any IP address.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

Standard ACL configuration mode

Device Modes

application-accelerator

central-manager

Usage Guidelines

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. Therefore, you must include at least one permit entry to create a valid access list.

You typically use a standard access list to allow connections from a host with a specific IP address or from hosts on a specific network. To allow connections from a specific host, use the permit hostsource-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit hostsource-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. Therefore, the permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

Examples

The following example creates standard access-list that denies any packets from source IP address 192.168.1.0 for processing:

WAE(config)# ip access-list standard teststdacl

WAE(config-std-nacl)# deny 192.168.1.0 any

WAE(config-std-nacl)# exit

The following commands activate the standard access list for an interface:

WAE(config)# interface gigabitethernet 1/0

WAE(config-if)# ip access-group teststdacl in

WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command:

Related Commands

(config-std-nacl) permit

To add a line to a standard access-list that specifies the type of packets that you want the WAAS device to accept for further processing, use the permit command.

[insert line-num] permit {source-ip[wildcard] | host source-ip | any}

To negate a standard IP ACL, use the following syntax.

nopermit {source-ip[wildcard]| host source-ip|any}

Syntax Description

insert

(Optional) Inserts the conditions following the specified line number into the access list.

line-num

Entry at a specific line number in the access list.

source-ip

Source IP address. The number of the network or host from which the packet is being sent, specified as a 32-bit quantity in 4-part dotted-decimal format (for example, 0.0.0.0).

wildcard

(Optional) Portions of the preceding IP address to match, expressed using 4-digit, dotted-decimal notation. Bits to match are identified by a digital value of 0; bits to ignore are identified by a 1.

Note For standard IP ACLs, the wildcard parameter of the ip access-list command is always optional. If the host keyword is specified for a standard IP ACL, then the wildcard parameter is not allowed.

host

Matches the following IP address.

any

Matches any IP address.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

Standard ACL configuration mode

Device Modes

application-accelerator

central-manager

Usage Guidelines

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. Therefore, you must include at least one permit entry to create a valid access list.

You typically use a standard access list to allow connections from a host with a specific IP address or from hosts on a specific network. To allow connections from a specific host, use the permit hostsource-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit hostsource-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. Therefore, the permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

Examples

The following example creates standard access-list that permits any packets from source IP address 192.168.1.0 for further processing:

WAE(config)# ip access-list standard teststdacl

WAE(config-std-nacl)# permit 192.168.1.0 any

WAE(config-std-nacl)# exit

The following commands activate the standard access list for an interface:

WAE(config)# interface gigabitethernet 1/0

WAE(config-if)# ip access-group teststdacl in

WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command: